I am going to start my project with the stock 2005 motor n/a until I can swap head/pistons/rods., and then move to something that will make a quick 450-500hp.. Dont suspect it'll be terribly expensive to make a bit more boost. My question is how to pick a turbo. I've seen the apps on the net, but I dont know all the metrics about ic decay, and pk hp.

Is there a way I can buy a turbo, and run it at a lot lower boost until I get the motor built up real strong?

I heard somone make mention of the holset hx40, would that be an ideal turbo for my ultimate hp goals?